Attachment for electric-light poles.



PATENTED MAR. 31,1903.

I. LEVI. ATTACHMENT FORELECTRIG LIGHT POLES.

APPLICATION FILED JULY 21, 1902.

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UNITED" STATES PATENT QFFTCE.

ISAAC LEVI, or BUFFALO, 'NEw' oRK.

ATTACHMENT FOR ELECTRIC-LIGHT POLES.

SPECIFICATION formingpart of Letters Patent 0. 723,886, dated March 31, 1903.

Application filed July 21, 1902.

To all whom, it may concern:

Be it known that I, ISAAC LEVI, a citizen of the United'States, residing at Buffalo, in the county of Erie and State, of New York, have invented new and useful Improvements in Attach ments for Electric-Light Poles,of which the following is a specification.

This invention relatesto the attachments employed on electric-light poles for removably fastening the end of the rope by which the lamp is raised and lowered on its supporting-arm. The fastening device in common use for this purpose consists of a staple, which is driven into the pole and over which a ring or loop atthe lower'end of the hoisting-rope is passed, and an ordinary padlock having its hasp passed through the staple on the outer side of the ring for retaining the latter on the staple.

. The object of my invention is to provide a simple and reliable attachment of this kind which permits the rope to be readily attached to and detached from the pole or other support and which can be produced at small cost. In the accompanying drawings, Figure 1 is a sectional elevation of my improved at tachment applied to a wooden pole. Fig. 2 is a horizontal section thereof in line 2 2, Fig. 1. Figs. 3 and 4 are cross-sections of the same in lines 3 3 and 4 4, Fig. 1. Fig. 5 is a sectional side elevation of the attachment, showing the same slightly modified to adapt it to a metallic pole. Fig. 6 is a front view of the last-mentioned attachment.

Similar letters of reference indicate corresponding parts throughout the several views.

Referring to the construction shown in Figs. 1 tot, A indicates a wooden electriclight pole,and B the usual lamp-hoisting rope, provided at its lower end with a ring B. This ring is adapted to pass over a downwardlyfacing hook or bow-O, secured to the pole and forming one of the principal members of my improved attachment. This hook is provided at its inner end with a horizontal attachingshank C, whichis preferably constructed in the form of a wood-screw'when the device is to be applied to a wooden pole, as shown in Fig. 1, and in the form of a tap-bolt O adapted to be screwed into a hole of the pole, if the attachment is to be secured to a metallic Serial No. 1 1 6 .3 5 2. (No model.)

pole, as shown in Fig. 5. The hook is provided above its screw-shank with a comparatively wide shoulder or straight vertical face 0, which bears againstthe pole, and below the shank with a lug or downward extension 0, having a similar straight face, which also bears against the pole, as shown in Fig. 1.

D indicates a vertically-swinging keeper which extends normally across the mouth or open lower side of the hook O for preventing the detachment of the ring B from the hook and which can be swung down to clear the hook forpermitting the removal of the ring when the electric lamp is to be lowered. In the construction shown in the drawings the keeper consists ofa closed rectangular lockcase, which is hinged to the hook extension 0' by a transverse pin or rivet e, passing through the extension, and an earor knuckle d, projecting rearwardly from the inner end of the case D. This extension may be bifur-.

cated to receive the knuckle ofthe lock-case, as shown in Fig.- 2. The lower front corners of this extension are curved concentrically with the pivot-pin e, and the adjacent inner end of the lock-case is recessed or constructed to permit the case to swing freely from its locked position (shown by full lines in Fig. 1) to the open or depending position. (Shown by dotted lines in the same figure.) The lockcase is provided in its top, near its outer end,

with an opening ffor admitting the bill of' the fixed hook, and it contains-a suitable locking bolt or catch g, constructed to interlock automatically with the hook and adapted to be retracted by an ordinary key inserted through a hole It in the Wall of the case. In the preferred construction shown in the drawings a; sliding locking-bolt is employed having a tubular rear portion g, which is'guided on a longitudinal pin 11, secured to the inner wall of the case and which is held 'in engagement with the hook by a spiral spring 9 surrounding the bolt and the guidepin between the inner wall of the case and a collar j on the bolt. The beveled front'end of the bolt interlocks with a notch in the hook, the upper side of this notch being. cor

respondingly beveled, so that upon swingingthe lock-case from its lower to its upper position thebolt automatically interlocks with the notch of the hook. The forward movement of the locking-bolt is limited by a stop 1'', projecting laterally from the guide-pin i into a longitudinal slot 76 of the bolt.

In order to exclude dirt, water, &c., from the interior of the lock-case, the hook is provided with an annular guard or collar Z, which is arranged to cover the top openingfof the case in the closed position of the latter. 7

It will now be understood that in order to detach the ring of the lamp-hoisting rope from the hook of the attachment it is only necessary to unlock the keeper or case D and swing it down to the position shown by dotted lines in Fig. 1, when the ring can be stripped olf the hook. To fasten the rope to the pole, its ring is simply passed over the hook and the lock-case is swung upwardly for closing the mouth of the hook, the bolt g of the case interlocking automatically with the hook, as hereinbefore described.

As the two principal members of the attachment remain permanently attached to the electric-light pole, they are always at hand and not liable to be lost or mislaid. The device is, moreover, very simple in construction and practically combines the separate members of the old staple-and-padlock fastening in a single self-contained attachment.

By arranging the hook on the upper side of its keeper D, as shown, the strain due to the weight of the electric lamp is received wholly by the rigid hook, rendering the attachment strong and reliable. This arrangement has the further advantage that in case the keeper should become unlocked or be broken by malicious persons the attaching ring B will still remain in engagement with the hook, preventing the lamp from falling and breaking or injuring passers-by.

I claim as my invention 1. An attachment for electric-light poles, consisting of a downwardly-facing hook provided at its rear end with means for fastening it to alpole, a movable keeper arranged on the under side of the hook and adapted to close the mouth thereof, and means for locking the keeper in its closed position, substantially as set forth.

2. An attachment for electric-light poles, consisting of a downwardly-facing hook provided at its rear end with a projecting shank for fastening the same to a pole, and a vertically-swinging keeper arranged on the under side of the hook, the keeper being hinged at its inner end to the hook below said attaching shank and provided with a locking device constructed to engage with the free end of the hook, substantially as set forth.

3. An attachment for electric-light poles, consisting of a downwardly-facing hook provided at itsinner end with a horizontal attaching-shank and below said shank with a downward extension, and a vertically-swinging keeper arranged on the under side of the hook and hinged at its inner end to said extension, the keeper being provided with a locking device constructed to engage with the free end of the hook, substantially as set forth.

Witness my hand this 19th day of July,

ISAAC LEVI. Witnesses:

CARL F. GEYER, THEO. L. Porr. 

